# SSI Steel Design vs CalBasic

The clearest difference is review sentiment: CalBasic at 100% against SSI Steel Design's 0%. CalBasic also leads on rating (5.0 vs 3.0) and in-app purchases (none vs 1). SSI Steel Design's advantage is update cadence (every 3 months vs every 22 months). On price, ads and monetization model there is nothing between them.

Both are free to download. SSI Steel Design sells 1 one-off in-app purchase. CalBasic asks for nothing beyond the download.

CalBasic holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews point the same way: 0% of SSI Steel Design's written reviews are positive against 100% of CalBasic's.

SSI Steel Design ships an update every 3 months, CalBasic every 22 months. The most recent releases landed on September 10, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | SSI Steel Design | CalBasic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/ssi-steel-design/id1474838160/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/calbasic/id1636031976/reviews)** |
| Number of ratings | 1 | **3** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 22 months |
| Monetization | Free | Free |
| Size | 23 MB | 1 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sahaviriya Steel Industries Public Company Limited](https://appshunter.io/developer/1474838159) | [Arun Mahasenan](https://appshunter.io/developer/1636031978) |

## What reviewers say

### SSI Steel Design

[App page](https://appshunter.io/ios/app/ssi-steel-design/id1474838160)

Easily determine the capacity of structural steel beams and columns. Get detailed calculation sheets to verify your work, designed according to AISC 360-16 standards. Features intuitive touch-based interaction and built-in material databases.

**Highlights:** Determine steel beam and column capacity, Generate detailed calculation sheets, Intuitive touch-based design input, Supports AISC 360-16 standards, Built-in material databases, Saves calculation sheets as JPG

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Report Sheet | $12.99 | one-time |


### CalBasic

[App page](https://appshunter.io/ios/app/calbasic/id1636031976)

A straightforward calculator app designed for simplicity. It features color-coded buttons for easy identification and a clean interface. Ideal for quick calculations on your mobile device.

**Highlights:** Basic calculator functionality, Color-coded buttons, Simple and clean interface, Designed for quick calculations

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SSI Steel Design free?

SSI Steel Design is free to download, with in-app purchases available.

### Is CalBasic free?

CalBasic is free to download, with no in-app purchases.

### Which has better reviews, SSI Steel Design or CalBasic?

CalBasic is rated higher. SSI Steel Design averages 3.0 out of 5 from 1 ratings, while CalBasic averages 5.0 from 3 ratings.

### Do SSI Steel Design or CalBasic have ads?

Neither SSI Steel Design nor CalBasic shows ads.

### Which is updated more often, SSI Steel Design or CalBasic?

SSI Steel Design ships an update every 3 months, and CalBasic every 22 months. Most recently, SSI Steel Design was updated on September 10, 2026 and CalBasic on June 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*